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[906023369]

What does qp represent in the equation deltaU = qp + w?

[106029153]

Qp represents heat at a constant pressure. Qp can also be represented by the change of enthalpy, also known as delta H. We use qp in an equation for a reaction at constant pressure that involves solids or liquids where pressure x the change in volume is insignificant and cant be used in the equation.

[Eli Weiss-Hung 2C]

Hello, qp represents the transfer of heat while pressure is held constant. In the equation you listed, the change in internal energy (deltaU) is equal to the transfer of heat at constant pressure (qp) plus the work done by the system on its container. If pressure is held constant but there is a change in the moles of gas, that means the volume of the container must change, requiring energy to be used as work.

[505468108]

Hi,
qp is the heat released or absorbed at when the system is at constant pressure. Qp is equivalent to enthalpy and Delta H

[Stephanie Rodas 2C]

Qp is the heat at a constant pressure. It is heat that is absorbed by the system.

[Isabelle Kim 3E]

qp is measuring the heat that gets absorbed or released at a constant pressure
delta H = qp which is also equal to delta U and PdeltaV

[Paul Torres 2I]

qp which is equal to delta H, is the heat absorbed or released at constant pressure.

[Ananya_2L]

Hello!

q(p) is the heat at constant pressure. The formula you mentioned, ∆U = qp + w, is for internal energy. q(p) is equivalent to ∆H and enthalpy.